Sand-pump



(No Model.)

S. McGAUGHTRY.

SAND PUMP. No. 266,856. Patented 0013.31, 1882.

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SAMUEL MCOAUGHTRY, OF BRADFORD, PENNSYLVANIA.

SAN D-PUMP.

SPECIFICATION forming part of Letters Patent No. 266,856, dated October31, 1882.

To all whom it may concern Be it known that I, SAMUEL MOUAUGHTRY, ofBradford, McKe-an county, Pennsylvania, have invented new and usefulImprovements in Sand-Pumps for Deep Wells; and I do hereby declare thatthe following is a full, clear, and exact description thereof, referencebeing had to the accompanying drawing, and the letters or figures ofreference marked thereon.

My invention relates to that class of pumps used for removing the sand,gravel, broken rock, mud, or other sediment encountered orproducedindrillingArtesianwells. Thesandpumps in common use are providedwith a valve made in the form of a ball, or of an inverted truncatedcone, having a stern reaching down through the bottom of the pump, so asto strike the bottom of the well and raise the valve for the admissionof sediment, and also to raise the valve and allow the sediment to dropout when the pump has been drawn out of the well. This form of valve isseated centrally in the bottom of the pump, and when raised presents anarrow annular opening for the admission of cuttings of rock and othersediment. The sediment frequently collects into balls or lumps, and atother times forms a thick mud or gum of the consistency of putty, andwhen in these conditions can not be drawn through the narrow annularopening of. the valves in common use, but remains at the bottom of thewell and materially retards the process of drilling which follows.

To obviate this difficulty is the object of my invention, as shown inthe drawing and specification.

The drawing represents my improved sandpump in elevation, the lower partbeing cut away to a central section.

A represents the barrel of the pump; B, the piston, having a rod, 0,working through the guide-bail D.

E is the valve-seat, having the upper portion, F, reduced so as to enterinto the lower end of the pump-barrel, and presenting atits upper end aledge for the valve to rest upon. The heavier lower end of thevalve-seat has a shoulder, G, against which the lower end of thepump-barrel abuts. The seat may be fastened into the barrel byscrew-threads or rivets or both.

a is the valve, resting on the upper edge of Application filed June 22,1882.

(No model.)

the "alve-seat. It is hinged at s, so as to open upwardly and assume theposition indicated by the dotted lines. \Vhen the valve islifted part ofthe water runs between the rear of the valve and the barrel, and washesout over ledge c any sediment which may have accumulated around thehinge,which, if this were not done, would soon become clogged.

b is an eyebolt passing through the valve, and to it is attached thestem or rod din such manner as to fold toward the under side of thevalve when the latter is raised and maintain a nearly-vertical position,as shown at d. The stem (l of the valve is of greater length than theheight of the valveseat, so that when the valve is closed the stemreaches considerably below the bottom of the pump. It should be of suchlength that when the valve is raised to a nearly-vertical position itslower end should be even with the lower end of the valveseat,'as shownin dotted lines.

0 e are recesses in the lower end of the valveseat for thepassageofsedimentfrom the outside to theinsideofthepump. Theoperation ofthis pump is as follows: It is lowered into the well by a rope, calledthe sanddine, attached to the upper end of the rod 0. When the pump issuspended the piston is drawn to the top of the barrel, and as thepumpdescends the valvestem (1 first strikes the bottom of the well andforces the valve open and into a nearly-vertical position, thus openingan inletto thepump nearly equal to the internal diameter of the pump.After the pump-barrel has reached the bottom the momentum of thedescending piston forces it down within the barrel to a point near thevalve. Upon withdrawing the sandline the piston B is first raised,whilethe barrel remains stationary, and a quantity of mud, sediment, orbroken rock, as the case may be, is drawn into the pump. When the pistonhas reached the top ot'the pumpbarrel the further withdrawal of thesand-line raises the barrel itself off the bottom of the well, and theweight of the stem d and of the fluid within the pump closes the valve aand prevents the escape of sediment from the pump. Upon reaching the topof the well the pump is rested down upon the lower end,when thevalve-stem again raises the valve and the contained sediment falls out.The enlarged area of the induction-opening which this form of valveallows renders this pump much more effective than those in common use. 7

I am aware that flap-valves have been used in sand-pumps, and thatvalves have been supplied with stems for lifting them from their seats;but I am not aware that a hinged stem has ever been pivoted to the underside of a flap-valve, so that when the latteris lifted the former willalways remain in aperpendicular position, which would not be the case ifthe stem were rigidly attached to the valve.

\Vhat I claim as new is 1. In a sand-pump a flap-valve hingedsubstantially as shown, and having a hinged stem

